import java.util.List;

class TreeDrawing
{
    static void Main(String[] args){

    }
}
class Tree
{
    String text;
    List<Tree> childs;
    public Tree(String text,List<Tree> childs)
    {
        this.text = text;
        this.childs = childs;
    }
    public Tree(String text)
    {
        this.text = text;
    }
}